Expected expression before '<=' token

Laika1986

Hey guys I working on a grading program for college. I'm pretty sure that I have it 90% done but i am getting a recurring error in each else if statement!I am hoping someone can point me in the right direction, thank you.

#include <stdio.h>

int main ()
{
	int grade=0;
	int i=0;

	printf("Please enter grade: ");
	scanf("%d",&grade);

	if (grade>100){
		printf("Invaild percentage");
		}
	else if(grade>=90 && <=100){
		i=1;}
	else if(grade>=80 && <=89){
		i=2;}
	else if(grade>=70 && <=79){
		i=3;}
	else if(grade>=60 && <=69){
		i=4;}
	else if(grade>=50 && <=59){
		i=5;}
	else if(grade<=49){
		i=6;}
	
	switch(i){

	case 1: printf("Grade Awarded: A");
		break;
	case 2: printf("Grade Awarded:B");
		break;
	case 3: printf("Grade Awarded:C");
		break;
	case 4: printf("Grade Awarded:D");
		break;
	case 5: printf("Grade Awarded:E");
		break;
	case 6: printf("Grade Awarded:F");
		break;
		
	default: printf("Invalid Percentage");
			}
return 0;
}

seamus

Although it seems logical when you read it in your head, you can't say

grade>=90 && <=100

You have to say

grade>=90 && grade<=100

Each statement on each side of the "&&" must be a complete boolean evaluation.

Laika1986

seamus wrote: »

Although it seems logical when you read it in your head, you can't say

grade>=90 && <=100

You have to say

grade>=90 && grade<=100

Each statement on each side of the "&&" must be a complete boolean evaluation.

Ah god that's such a simple mistake!Getting back into it after christmas forgotten a few things!Thanks very much!

8k2q1gfcz9s5d4

is there a need for the switch?

#include <stdio.h>

int main ()
{
	int grade=0;
	int i=0;

	printf("Please enter grade: ");
	scanf("%d",&grade);

	if (grade>100){
		printf("Invaild percentage");
		}
	else if(grade>=90 && grade<=100){
		printf("Grade Awarded: A");}
	else if(grade>=80 && grade<=89){
		printf("Grade Awarded:B");}
	else if(grade>=70 && grade<=79){
		printf("Grade Awarded:C");}
	else if(grade>=60 && grade<=69){
		printf("Grade Awarded:D");}
	else if(grade>=50 && grade<=59){
		printf("Grade Awarded:E");}
	else if(grade<=49){
		printf("Grade Awarded:F");}
	
return 0;
}